65656764 has 24 divisors (see below), whose sum is σ = 170221520. Its totient is φ = 21885552.

The previous prime is 65656757. The next prime is 65656769. The reversal of 65656764 is 46765656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65656769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303859 + ... + 304074.

Almost surely, 2^65656764 is an apocalyptic number.

It is an amenable number.

65656764 is an abundant number, since it is smaller than the sum of its proper divisors (104564756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65656764 is a wasteful number, since it uses less digits than its factorization.

65656764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607946 (or 607938 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 65656764 is about 8102.8861524768. The cubic root of 65656764 is about 403.4222290378.

The spelling of 65656764 in words is "sixty-five million, six hundred fifty-six thousand, seven hundred sixty-four".